lol...I had a bad cat too that rattled like a mofo...ARH H/F cats took care of that...OP I recommend this first...
http://www.rangeracceleration.com/Clutch_Care.html then if everything is lookin good take your car out somewhere remote and after makin sure the motor and more importantly the trans fluid is warm? DRIVE the piss out of it lulz! do 4 or 5 good 1-4 max rpm shifts and get that clutch workin! also make sure to include some good down shifts...either she'll clean up or what ever is actin up will hopefully become more identifiable or better yet just break...lol rather happen under controlled conditions the out in b f Egypt....peace